# coding=utf-8 
from PIL import Image
import shutil 
import os

class Graphics: 
 infile = '/Users/lzc/Documents/180.png'
 outfile = '/Users/lzc/Documents/adjust.png'

 # 实例方法，将文件夹中 180的图片切割成各种尺寸
 def fixed_sizeList(cls, fileName, sourceImg, sizeList):
     
     for sizeStr in sizeList:
         
         #获取目标输出图片
         tmpOutFile = '/'+fileName+'/AppIcon/' + sizeStr + '.png'
         targetPath = os.getcwd() + tmpOutFile
         
         if os.path.exists(targetPath):
#           print(sizeStr + '图片存在')  #如果图片存在，不裁剪
            continue
         
         print('\n\n【【【【【【【' + sizeStr + '尺寸的icon图片不存在，用180裁剪！！' + '】】】】】】】\n')
         originPath = os.getcwd() + '/'+fileName+'/AppIcon/' + sourceImg
         im = Image.open(originPath)
         
         # 判断是否有中间的横杆
         tmpSize = 60
         if '-' in sizeStr:
            tmpSize = int(sizeStr.split('-')[0])
         else:
            tmpSize = int(sizeStr)
         
         out = im.resize((tmpSize, tmpSize),Image.ANTIALIAS)
         out.save(targetPath)
             

 
 @classmethod
 def fixed_size(cls, width, height): 
  """按照固定尺寸处理图片"""
  im = Image.open(cls.infile) 
  out = im.resize((width, height),Image.ANTIALIAS) 
  out.save(cls.outfile) 
  
 @classmethod
 def resize_by_width(cls, w_divide_h): 
  """按照宽度进行所需比例缩放"""
  im = Image.open(cls.infile) 
  (x, y) = im.size 
  x_s = x 
  y_s = x/w_divide_h 
  out = im.resize((x_s, y_s), Image.ANTIALIAS) 
  out.save(cls.outfile) 
  
 @classmethod
 def resize_by_height(cls, w_divide_h): 
  """按照高度进行所需比例缩放"""
  im = Image.open(cls.infile) 
  (x, y) = im.size 
  x_s = y*w_divide_h 
  y_s = y 
  out = im.resize((x_s, y_s), Image.ANTIALIAS) 
  out.save(cls.outfile) 
  
 @classmethod
 def resize_by_size(cls, size): 
  """按照生成图片文件大小进行处理(单位KB)"""
  size *= 1024
  im = Image.open(cls.infile) 
  size_tmp = os.path.getsize(cls.infile) 
  q = 100
  while size_tmp > size and q > 0: 
   print q 
   out = im.resize(im.size, Image.ANTIALIAS) 
   out.save(cls.outfile, quality=q) 
   size_tmp = os.path.getsize(cls.outfile) 
   q -= 5
  if q == 100: 
   shutil.copy(cls.infile, cls.outfile) 
  
 @classmethod
 def cut_by_ratio(cls, width, height): 
  """按照图片长宽比进行分割"""
  im = Image.open(cls.infile) 
  width = float(width) 
  height = float(height) 
  (x, y) = im.size 
  if width > height: 
   region = (0, int((y-(y * (height / width)))/2), x, int((y+(y * (height / width)))/2)) 
  elif width < height: 
   region = (int((x-(x * (width / height)))/2), 0, int((x+(x * (width / height)))/2), y) 
  else: 
   region = (0, 0, x, y) 
  
  #裁切图片 
  crop_img = im.crop(region) 
  #保存裁切后的图片 
  crop_img.save(cls.outfile) 
